Rotary-valve mechanism for internal-combustion engines.



J. 8. BROWN. ROTARY VALVE MEEHANISM FOR iNTERNAL COMBUSTION ENGINES APPLICATION FILED JAN. 8. 1914.

LQQQBQQU Patented Dec. 19, Hfib.

lV/TNESSES: 7

A TTOR/IE Le zilrl also 1 '1 :11 ii. 2 Innert1 m an v en n it J the ane @351 the 1 des ighn' es ihe V the piston movahie therein, an": 8 e casing which is here shove as 11101 nted on the head of the cylhncierc the casing navinga cylindrical valve chamber L and. a passage 5 extending laterallyr0111 the chmhher and opening through the enter? face 0:? the casing 3. As 11 re shown, casing is formed with two F heated rically opghkite each whet: hereinaffier 6 ii; a chamber 7 i is ping eliahle in having 3. concave face 8 he fiew 1: .w e spring The spi h1g3 may, 12. and the I 11' face of 111 against the 1'0- ichis iDYQ'DfiLiDIl is concerned, the

'Wh lel: "vi'iih but one h came; 1

Ci) at Its inner e The construction and operation of the valve form no part of this invention, and this invention resides; wholly in the plug 7 and contiguous parts.

In operation, the valve (5 rotates in the direction of the arrow, and the exhaust port 13 registers with the passage 9 of the'lelt hand plug taking elf the exhaust gases and immediately afterward, the inlet port 12 registers with the passage of the left hand plug 7 permitting a fresh charge to enter the cylinder through the passages 9, 10, channel 11 and passage 14. Subsequently, the exhaust port 13 registers with the passage 9 of the right hand plug taking off the exhaust gases and then the inlet 12 registers with the passage 9 of the right hand plug.

This valve mechanism is particularly advantageous in that owing to the passage 5, the plug 7 is readily removed and replaced, and owing to the use of the plug, a piston ring which renders the plug gas tight can be employed. Furthermore, the plug and its retaining means, and constructions whereby the spark plug is supported by the retaining means provide a particularly sinr ple and compact mechanism.

lVhat I claim is 1. In an internal combustion engine, a cylinder, a valve casing mounted on the cylinder and having a cylindrical valve chamber and a passage extending laterally from the valve chamber, a rotary alve journaled in the chamber, a plug slidable in said passage and having its inner end concave and engaging the periphery of the valve, the plug also having a gas passage therethrmigh, the passage opening through the concave face, and a piston ring encircling the plug near the concave face, the valve having a port movable into and out of registration with the inner end of the passage of the plug, substantially as and for the purpose described.

2. In an internal combustion engine, a cylinder, a valve casing mounted on the cylinder and having a cylindrical valve chamber, and a passage extending laterally from the valve chamber and opening through the outer faceof the casing, a rotary valve in the valve chamber, a plug slidable in said passage and engaging at its inner end with the valve, the plug having a gas passage therethreugh opening through the inner end face of the plug, the gas passage also com nuinicating with the cylinder and, opening through the outer end of the plug, the valve having a port movable into and out of register with the inner end of the gas passage, a retaining member in the outer end of the lateral passage of the casing and having a hollow stem extending into said passage of the plug, a spring encircling the stem and interposed between the retaining member and the plug, and a spark plug extending into the hollow stem of the retaining member, substantially as and for the purpose described.

8. In an internal combustion engine, a cylinder, a valve casing mounted on the cylinder and having a cylindrical valve chamber, and a passage extending laterally from the valve chamber and opening through the outer face of the casing, a rotary valve journaled in the valve chamber, a plug slidable in the passage and having a concave face at its inner end engaging the periphery of the valve, the plug being formed with a gas passage opening through the concave face and through the periphery of the plug and communicating with the cylinder at the point said passage opens through the periphery of the plug, said passage also opening through the outer end of the plug, the valve having a port movable into and out of register with the inner end of the gas passage, a piston ring encircling the plug near the inner concave end thereof, a retaining member in the outer end of the lateral passage of the casing, the retaining member having a hollow stem extending into the passage ol the plug, a spring inserted between theretaming member and the plug and encircling the stem, and a spark plug extending in the hollow stem of the retaining member, substantially as and for the purpose set forth. J

4. 1n an internal combustion engine, a cylinder, a valve casing mounted on the cy1- inder and having a cylindrical valve cham ber, and a passage extending outwardly from the valve chamber and opening'through the outer face of the casing, a rotary valve in the valve chamber, a plug slidable in the passage and engaging at its inner end with the periphery of the valve, the plug having a gas passage therethrough opening through the inner end face of the plug and also through the outer end of the plug, the gas passage of the plug also communicating with the engine cylinder, the valve having a port movable into and out of register with the inner end of thegas passage, a retaining member in the outer end of the outwardly extending passage of the casing and having a passage opening into the plug, and a sparlc plug carried by the retaining member and having its electrodes exposed in the passage of the retaining member, substantially as and For the purpose described.

5. In an internal combustion engine, a cylinder, a valve casing mounted on the cylinder and having a cylindrical valve chamber and a passage extending laterally from the valve chamber, a rotary valve journaled in the chamber, a plug slidablein said passage and engaging at its inner end with the periphery of the valve, the plug having a peripheral annular channel, and an internal lengthwise passage opening through its inner end and also into the channel, the from the valve chamber and opening through valve having a port movable into and out of registration with the inner end of the passage of the plug and the casing having a passage communicating with the cylinder and opening through the side of the lateral passage of the casing in registration with said annular channel of the plug, and a spring arranged to force the plug inwardly against the *alve, substantially as and for the purpose described.

6. In an internal combustion engine, a cylinder, a valve casing mounted on the cylinder and having acylindrical 'alve chan'lloer, and a passage extending laterally from the valve chamber, a rotary valve in the valve chamber, a plug slidable in said passage and having a concave face at its inner end engaging with the periphery of the valve, the plug having a peripheral annular channel, and an internal lengthwise channel opening thrt'mglrits concave face ard into the channel. the plug also havinga piston ring between said channel and the inner end of the plug, the valve having a port movable into and out of registration with theinner end of the passage of the plug, and

-tlie casing having a passage communicating with the cylinder and opening through the side of the lateral passage of the casing in position toregister with said annular channel of the plug, and a spring arranged to force the plug inwardly against the valve, substantially as and for the purposespecified.

T. In an internal combustion engine, a valve casing formed with a cylindrical valve chamber. and a passage extending laterally the outer face of the casing, a rotary valve journaled in the chamber, a plug located in the passage and having a concave face at its inner end engaging the periphery of the valve, the'plug being formed with a passage opening through its opposite ends and through the periphery of the plug, the plug being also formed with a piston ring located near the inner end thereof, the valve being formed with a port movable into and out of registration with the inner end of the passage of the plug, and the casing being formed with a passage communicating witll the cylinder and opening through a side wall of the lateral passage of the casing, in position to communicate with the passage of the plug where it opens through the periphery of the plug, a retaining member in the outer end of the lateral passage of the casing, said member having a hollow stenr tit-- ting the lengthwise passage of the plu a spring interposed between the retaining member and the outer end of the plug, the spring encircling said stem, and a spark plug extending into the stem of the retaining n'iember, substantially as and for the purpose set forth.

In testimony whereof, I have hereunto signed my name in the presence of two attesting witnesses, at S 'racuse, in the county of Onondaga, in the State of New York, this 13th day of December, 1913.

JULIAN S. BRUWN.

Witnesses:

S. DAVIS, T. B. PICKARI). 

